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zheka24 [161]
3 years ago
10

The axis of symmetry for the graph of the function is f(x) = x2 + bx + 10 is x = 6. What is the value of b?

Mathematics
1 answer:
masya89 [10]3 years ago
7 0
<span>The question is asking us to find the value of b in the function: f ( x ) = x^2 + b x + 10, if the axis of symmetry is x = 6. This is a quadratic function in a form: f ( x ) = a x^2 + b x + c. The formula for the axis of symmetry is: x = - b / 2 a. So: 6 = - b / 2 a; 6 = - b / 2 ; - b = 6 * 2; - b = 12. Answer: b = - 12. </span>
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To find:

The value of x.

Solution:

The surface area of a cuboid is:

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Putting SA=204.25,  l=10,\ b=x,\ h=6.5 in the above formula, we get

204.25=2(10\times x+x\times 6.5+6.5\times 10)

204.25=2(10x+6.5x+65)

204.25=2(16.5x+65)

Using distributive property, we get

204.25=2(16.5x)+2(65)

204.25=33x+130

204.25-130=33x

74.25=33x

Divide both sides by 33.

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Therefore, the correct option is B.

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3 years ago
7. Sorav bought a jacket for Rs. 2500 sold it for Rs. 1900. Find her loss.​
Morgarella [4.7K]

Answer:

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Step-by-step explanation:

if SP>CP,  

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if CP>SP,  

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Here in the question CP>SP so,  

loss = CP - SP  

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